Novel wire feeding device

Abstract

The invention discloses a novel wire feeding device, and belongs to the technical field of automatic welding equipment. According to the technical scheme, the novel wire feeding device comprises a wire feeding mechanism, a welding wire, a main wire feeding pipe, a transition wire feeding pipe, a wire guide rod nozzle and a vibration driving assembly, the vibration driving assembly comprises a vibration source, a vibration connecting rod and a wire feeding pipe connector, the vibration source is in transmission connection with the wire feeding pipe connector through the vibration connecting rod, and the wire feeding pipe connector is fixedly connected with the main wire feeding pipe; the wire feeding mechanism provides wire feeding power for the welding wire. The vibration driving assembly drives the main wire feeding pipe and the welding wire to do synchronous reciprocating motion, vibration wire feeding without relative friction is achieved, the problems that due to friction between the welding wire and the wire feeding pipe, wire feeding is unstable, and vibration transmission is limited by the length are effectively solved, and the device has the advantages that welding wire abrasion is reduced, the wire feeding stability is improved, and the stirring effect of a molten pool is enhanced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automatic welding equipment, and particularly relates to a novel wire feeding device. BACKGROUND

[0002] The existing vibration wire feeding technology mainly falls into two categories: one is a scheme directly acting on the welding wire, such as realizing vibration by vibrating the wire feeding mechanism or clamping the welding wire by an additional wire vibrating mechanism. In this scheme, the welding wire reciprocates in the wire feeding tube and continuously slides with the tube wall, which not only causes the wire feeding resistance to increase and the wire feeding speed to fluctuate, but also easily causes the welding wire surface to wear (such as the copper layer of copper-plated welding wire to fall off), and the accumulated debris further aggravates the wire feeding jam. At the same time, uneven vibration transmission easily causes the molten pool to be unstable, and when the length of the wire feeding tube exceeds a certain distance, the vibration energy is greatly attenuated due to friction loss and large elastic deformation of the welding wire, and the vibration amplitude of the far-end welding wire is insufficient, which cannot realize effective molten pool stirring.

[0003] The other is an indirect vibration scheme, such as ultrasonic wire feeding, which indirectly drives the welding wire by vibrating the wire feeding tube. Although this scheme reduces the friction between the welding wire and the wire feeding tube to some extent, the vibration amount is small, the stirring force of the molten pool is limited, and it is difficult to completely eliminate pores and slag. The wire feeding tube is a whole structure, and the vibration transmission is limited by the length. When the wire feeding distance is long, the vibration amplitude is seriously attenuated, which cannot meet the actual application requirements. In addition, in the scene where the distance between the wire feeding mechanism and the welding position is far, the existing technology often adds a small wire drawing device near the welding position to improve the wire feeding precision, but the traditional vibration wire feeding scheme is difficult to effectively cooperate with the wire drawing device, the vibration frequency is not synchronized with the wire feeding speed, which causes the welding quality to decrease. At the same time, the vibration parameters of the existing device are mostly fixed values, which cannot be dynamically adjusted according to different welding materials, plate thicknesses or weld requirements, and the adaptability is poor. The key connecting components lack a buffer structure, and long-term high-frequency vibration easily causes the components to loosen and the welding wire to fatigue damage, which affects the service life and operation stability of the device.

[0004] Therefore, the existing technology has the outstanding problems of unstable wire feeding caused by friction between the welding wire and the wire feeding tube, vibration transmission limited by the length of the wire feeding tube, fixed vibration parameters, difficulty in adapting to the cooperative work of the wire drawing device, and insufficient design of key components. SUMMARY

[0005] The present application provides a novel wire feeding device to solve at least one of the above technical problems.

[0006] The technical scheme adopted by the present application is: A novel wire feeding device, comprising a wire feeding mechanism, a welding wire, a main wire feeding pipe and a transition wire feeding pipe arranged in sections, a wire guide rod nozzle, and a vibration driving assembly; the vibration driving assembly comprises a vibration source, a vibration connecting rod, and a wire feeding pipe connector, the vibration source is in transmission connection with the wire feeding pipe connector through the vibration connecting rod, and the wire feeding pipe connector is fixedly connected with the main wire feeding pipe; the wire feeding mechanism provides a wire feeding power to the welding wire, the welding wire is arranged inside the main wire feeding pipe and has no relative movement with the main wire feeding pipe, the main wire feeding pipe is driven by the vibration driving assembly to make reciprocating movement, thereby driving the welding wire to make synchronous reciprocating movement, and the welding wire sequentially passes through the transition wire feeding pipe and the wire guide rod nozzle to realize vibration wire feeding.

[0007] Further, the wire feeding pipe connector is a rigid connection structure, and a buffer is arranged in the wire feeding pipe connector.

[0008] Further, a guide protrusion is arranged on the inner wall of the main wire feeding pipe, and the guide protrusions are uniformly distributed along the length direction of the main wire feeding pipe.

[0009] Further, a low-friction inner lining is arranged in the passage of the transition wire feeding pipe, and the transition wire feeding pipe is coaxially arranged with the main wire feeding pipe.

[0010] Further, the vibration source is provided with a variable frequency adjustment module and an amplitude adjustment mechanism, the frequency adjustment range of the variable frequency adjustment module is 50Hz-500Hz, and the amplitude adjustment mechanism realizes the adjustment of the amplitude of 0.5mm-5mm by adjusting the eccentric distance of an eccentric block.

[0011] Further, the vibration driving assembly further comprises a flywheel, the reciprocating movement distance of the welding wire is adjusted by changing the diameter of the flywheel, and the adjustment range is 1mm-10mm.

[0012] Further, the wire feeding device further comprises a wire drawing device arranged near the welding position, the wire drawing device is a small wire feeding mechanism, the vibration driving assembly, the main wire feeding pipe, and the transition wire feeding pipe are integrated on the wire drawing device, and the wire feeding speed of the wire drawing device and the vibration frequency of the main wire feeding pipe are adaptively matched.

[0013] Further, the vibration source is a straight vibrator, a reciprocating mechanism, or a linear motor; when the vibration source is a straight vibrator, the output end thereof is rigidly connected with the vibration connecting rod and a dustproof sealing sleeve is arranged at the connection position; when the vibration source is a reciprocating mechanism, it is a crank slider mechanism or a cam mechanism and the transmission accuracy is ≤0.05mm; when the vibration source is a linear motor, the response time thereof is ≤10ms and the closed-loop adjustment of the vibration parameters is realized through a servo controller.

[0014] Further, the application also proposes that the low-friction inner lining layer is a polytetrafluoroethylene coating or a ceramic lining, and the thickness of the inner lining layer is 0.3-1 mm; the height of the guide protrusion is 0.1-0.3 mm.

[0015] Further, the application also proposes that the buffer is an elastic washer or a rubber bushing, and the end of the main wire feeding pipe is provided with a wire feeding pipe end head, and the inner wall of the wire feeding pipe end head is provided with a chamfer structure with a chamfer angle of 15-30°.

[0016] Thanks to the above technical solutions, the application has the following beneficial effects: 1. The innovative vibration wire feeding mechanism effectively solves the problems of unstable wire feeding and wire wear caused by the relative friction between the welding wire and the wire feeding pipe in the prior art, and overcomes the limitation of severe vibration attenuation during long-distance wire feeding, thereby providing a more stable, efficient and high-quality wire feeding solution for TIG / MAG welding.

[0017] 2. The rigid connection structure of the wire feeding pipe connector ensures that the reciprocating motion of the vibration driving assembly can be efficiently and accurately transmitted to the main wire feeding pipe, thereby ensuring the synchronous vibration wire feeding effect of the welding wire. At the same time, the buffer built-in the wire feeding pipe connector can effectively absorb the impact and high-frequency vibration generated during the vibration process, significantly reducing the instantaneous impact on the main wire feeding pipe and the welding wire, and avoiding the component wear and unstable wire movement caused by severe vibration.

[0018] 3. The wire feeding device can flexibly adjust the vibration frequency and amplitude of the welding wire according to different welding processes, material properties and welding parameters. This adjustability greatly enhances the adaptability of the wire feeding device, enabling the vibration wire feeding process to best match the specific welding requirements.

[0019] 4. The flywheel is introduced into the vibration driving assembly of the new wire feeding device, and its diameter is adjustable, so that the application can accurately adjust the reciprocating distance of the welding wire. This adjustment capability enables the device to adapt to the diversified requirements of vibration amplitude for different welding processes, effectively solving the limitations of existing vibration wire feeding devices in terms of vibration amplitude adjustment.

[0020] 5. By setting a wire puller near the welding position, and integrating the vibration driving assembly, the main wire feeding pipe and the transition wire feeding pipe on the wire puller, the problems of unstable wire feeding and vibration attenuation during long-distance wire feeding are effectively solved, the wire feeding precision and vibration efficiency of the welding wire in the welding area are significantly improved, and the welding wire can enter the molten pool in a more stable and controlled state. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the embodiment of the application. Figure 2 is a front view of one embodiment of the present application; Figure 3 is a front view of another embodiment of the present application; Figure 4 is a schematic view of the structure of the wire feeding tube end; Figure 5 is a schematic view of the internal structure of the wire feeding tube; Figure 6 is a front view of one embodiment of the present application; Figure 5 is an enlarged view of part A of the present application.

[0022] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0023] In the drawings: 1, wire feeding mechanism; 2, welding wire; 3, main wire feeding tube; 4, wire feeding tube end; 5, transition wire feeding tube; 6, wire guide rod nozzle; 7, vibration source; 8, wire feeding tube connector; 10, flywheel; 11, vibration connecting rod; 13, wire puller. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the overall concept of the present application, the following detailed description is given with reference to the accompanying drawings.

[0025] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given in this description. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present application.

[0026] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as a limitation of the present application.

[0027] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connecting", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, and can also be communication; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description of the terms "embodiment", "example", "one embodiment", "exemplary" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] Referring to Figures 1 to 3 , the application provides a novel wire feeding device, which comprises a wire feeding mechanism 1, a welding wire 2, a main wire feeding pipe 3 and a transition wire feeding pipe 5 arranged in sections, a wire guide rod nozzle 6 and a vibration driving assembly; the vibration driving assembly comprises a vibration source 7, a vibration connecting rod 11 and a wire feeding pipe connector 8, the vibration source 7 is drivingly connected with the wire feeding pipe connector 8 through the vibration connecting rod 11, and the wire feeding pipe connector 8 is fixedly connected with the main wire feeding pipe 3; the wire feeding mechanism 1 provides wire feeding power to the welding wire 2, the welding wire 2 is arranged inside the main wire feeding pipe 3 and has no relative movement with the main wire feeding pipe 3, the main wire feeding pipe 3 is driven by the vibration driving assembly to make reciprocating movement, thereby driving the welding wire 2 to make synchronous reciprocating movement, and the welding wire 2 sequentially passes through the transition wire feeding pipe 5 and the wire guide rod nozzle 6 to realize vibration wire feeding.

[0030] Wire feeder 1 refers to the device used to provide forward motion to the welding wire 2, usually by means of a drive wheel or gear in contact with the welding wire 2, pulling the welding wire 2 out of a wire reel or spool and into the welding area. Its role is to ensure that the welding wire 2 is delivered steadily at a set speed. Welding wire 2 refers to the metal wire used as filler material during the welding process, which melts to form the weld. The material and diameter of the welding wire 2 are chosen based on different welding processes and base materials. Main wire tube 3 refers to the main conduit through which the welding wire 2 passes in the wire feeding path, which is connected to the vibration drive assembly and moves back and forth with it. The main wire tube 3 carries the welding wire 2 inside and ensures that the welding wire 2 does not move relative to it. Transition wire tube 5 refers to the conduit connecting the main wire tube 3 and the wire guide rod nozzle 6, used to further guide the welding wire 2 smoothly into the welding area. Wire guide rod nozzle 6 refers to the component located at the end of the wire feeding path, close to the welding pool, which functions to accurately guide the welding wire 2 into the pool and usually has a conductive function to transfer welding current to the welding wire 2. Vibration drive assembly refers to the overall device that generates and transmits vibration energy to drive the main wire tube 3 and the welding wire 2 inside it to move back and forth. Vibration source 7 refers to the core component in the vibration drive assembly that generates mechanical vibration, such as a motor, electromagnet or other reciprocating motion generator. Vibration link 11 refers to the mechanical member connecting the vibration source 7 and the wire tube connector 8, used to transmit the motion generated by the vibration source 7 to the wire tube connector 8. Wire tube connector 8 refers to the component used to transmit the motion of the vibration link 11 to the main wire tube 3 and achieve fixed connection between the main wire tube 3 and the vibration drive assembly.

[0031] Assuming user A is performing TIG welding at a certain location, first, the wire feeder 1 stably feeds the welding wire 2 out of the spool. The welding wire 2 then enters the main wire tube 3. In this device, the inner diameter of the main wire tube 3 is precisely designed so that the welding wire 2 is tightly constrained therein, ensuring that there is no relative sliding between the welding wire 2 and the main wire tube 3.

[0032] Next, the vibration drive assembly starts working. The vibration source 7 generates high-frequency reciprocating motion, which is transmitted to the wire tube connector 8 through the vibration link 11. Since the wire tube connector 8 is fixedly connected to the main wire tube 3, the main wire tube 3 is driven to move back and forth axially. Since there is no relative motion between the welding wire 2 and the main wire tube 3, the reciprocating motion of the main wire tube 3 directly drives the welding wire 2 to move back and forth synchronously. This means that the welding wire 2 is advancing while also vibrating at the same frequency and amplitude as the main wire tube 3.

[0033] Subsequently, the vibrating welding wire 2 sequentially passes through the transition wire feeder tube 5 and the wire guide rod nozzle 6, and finally enters the welding pool. During the entire wire feeding process, there is no sliding friction between the welding wire 2 and the main wire feeder tube 3, thereby avoiding the problems of surface wear of the welding wire 2 and fluctuation of wire feeding resistance. At the same time, since the main wire feeder tube 3 directly drives the welding wire 2 to vibrate, the vibration energy can be efficiently and uniformly transmitted to the end of the welding wire 2, and even under a relatively long wire feeding distance, the welding wire 2 can still have sufficient vibration amplitude in the pool area.

[0034] Therefore, when the welding wire 2 enters the pool, the synchronous reciprocating vibration of the welding wire 2 can effectively stir the pool. This stirring effect promotes the floating and discharge of bubbles and impurities in the pool, reduces the formation of defects such as pores and slag inclusions. At the same time, the composition of the pool is homogenized, and it is helpful to refine the grain structure, thereby improving the mechanical properties such as hardness and tensile strength of the welded joint. The entire process realizes stable, efficient and high-quality vibration wire feeding.

[0035] The embodiment fundamentally eliminates the sliding friction between the welding wire 2 and the main wire feeder tube 3 by designing the welding wire 2 to be arranged inside the main wire feeder tube 3 without relative movement. In the above example, when the welding wire 2 and the main wire feeder tube 3 reciprocate as a whole, the surface wear problem of the welding wire 2 is effectively avoided, and the wire feeding stability is improved, thereby ensuring the consistency of the welding quality.

[0036] The embodiment directly drives the main wire feeder tube 3 to reciprocate through the vibration driving assembly, and then drives the welding wire 2 to synchronously reciprocate. This direct driving mode of the main wire feeder tube 3 vibration ensures that the vibration energy can be efficiently and uniformly transmitted to the end of the welding wire 2. In the above example, even if the wire feeding distance is long, the welding wire 2 can still maintain sufficient vibration amplitude in the pool area, thereby realizing sufficient stirring of the pool, effectively promoting the discharge of bubbles and impurities, and refining the grains, and significantly improving the welding quality.

[0037] In summary, the new wire feeding device of the embodiment effectively solves the problems of unstable wire feeding and welding wire 2 wear caused by relative friction between the welding wire 2 and the wire feeder tube in the prior art, and overcomes the limitation of serious vibration attenuation during long-distance wire feeding, thereby providing a more stable, efficient and high-quality wire feeding solution for TIG / MAG welding.

[0038] As a specific embodiment of the wire feeder tube connector 8 in the present application, the present application proposes that the wire feeder tube connector 8 is a rigid connection structure, and the wire feeder tube connector 8 is internally provided with a buffer.

[0039] The rigid connection structure is designed to ensure that the reciprocating motion generated by the vibration driving assembly can be efficiently and accurately transmitted to the main wire feeding pipe 3, thereby driving the welding wire 2 to vibrate synchronously. Specifically, the rigid connection structure can use bolts, rivets or welding to tightly fix the wire feeding pipe connector 8 and the main wire feeding pipe 3, forming an integrated structure to ensure that the connection part does not slide or loosen during vibration. The buffer is a component that can absorb and dissipate energy, reduce impact or vibration. The buffer is arranged inside the wire feeding pipe connector 8, which absorbs part of the impact energy and high-frequency vibration transmitted by the vibration driving assembly while ensuring motion transmission by the rigid connection structure, reduces the instantaneous impact on the main wire feeding pipe 3 and the welding wire 2, protects the components, and helps to smooth the reciprocating motion of the welding wire 2. The buffer can be embedded in the internal structure of the wire feeding pipe connector 8, such as a rubber pad, a silicone pad or a polyurethane pad, which has good vibration absorption and buffering performance.

[0040] The scheme of the present application combines the accuracy and stability of vibration transmission by designing the wire feeding pipe connector 8 as a rigid connection structure and simultaneously embedding a buffer. The reciprocating motion generated by the vibration driving assembly is first efficiently and losslessly transmitted to the main wire feeding pipe 3 through the rigid connection structure, ensuring that the main wire feeding pipe 3 can accurately reproduce the motion trajectory and frequency of the vibration source 7, and then driving the welding wire 2 to vibrate synchronously and controllably. On this basis, the buffer inside the wire feeding pipe connector 8 plays a key role in shock absorption, which can absorb the instantaneous impact and high-frequency noise generated during vibration, avoiding the direct transmission of these impacts to the main wire feeding pipe 3 and the welding wire 2. This combination of rigidity and buffering design makes the welding wire 2 more stable in its motion process while obtaining accurate vibration, reducing problems such as deformation, wear or unstable wire feeding caused by severe impact. In this way, the effectiveness of the vibration wire feeding is ensured, and the stability of the entire wire feeding system and the service life of the components are improved.

[0041] Through the above technical scheme, the wire feeding pipe connector 8 adopts a rigid connection structure, ensuring that the reciprocating motion of the vibration driving assembly can be efficiently and accurately transmitted to the main wire feeding pipe 3, thereby ensuring the synchronous vibration wire feeding effect of the welding wire 2. At the same time, the buffer embedded in the wire feeding pipe connector 8 can effectively absorb the impact and high-frequency vibration generated during vibration, significantly reducing the instantaneous impact on the main wire feeding pipe 3 and the welding wire 2, avoiding component wear and welding wire 2 motion instability caused by severe vibration, thereby improving the overall stability of the wire feeding system and the service life of the components, ensuring the stability and reliability of the vibration wire feeding.

[0042] As a preferred embodiment of the main wire feeding pipe 3, refer to Figure 3The inner wall of the main wire feeding pipe 3 is provided with guide protrusions, which are uniformly distributed along the length direction of the main wire feeding pipe 3. The guide protrusions are structures provided on the inner wall of the main wire feeding pipe 3, which mainly function to limit the radial freedom of the welding wire 2 in the pipe, so that the welding wire 2 can be kept in the central area of the pipe during wire feeding, thereby effectively reducing the contact area between the welding wire 2 and the inner wall of the main wire feeding pipe 3, lowering the frictional resistance, and providing stable guiding support for the welding wire 2. The guide protrusions can be specifically realized as helical protrusions extending along the inner wall of the main wire feeding pipe 3, or can be ring-shaped protrusions provided on the inner wall of the main wire feeding pipe 3 at certain intervals, or can be strip-shaped protrusions distributed in a circumferential array on the inner wall. The guide protrusions are arranged at substantially equal intervals or densities on the entire effective length of the main wire feeding pipe 3. Such uniform distribution is intended to ensure that the welding wire 2 can obtain continuous and stable guiding and support throughout the wire feeding path, thereby avoiding unstable wire feeding caused by excessive local friction or insufficient guiding.

[0043] The scheme of the present application provides guide protrusions on the inner wall of the main wire feeding pipe 3, which are uniformly distributed along the length direction of the pipe, so that when the welding wire 2 passes through the main wire feeding pipe 3, the contact mode between the welding wire 2 and the pipe wall changes from surface contact to point or line contact, thereby significantly reducing the actual contact area between the welding wire 2 and the inner wall of the main wire feeding pipe 3. When the wire feeding mechanism 1 provides wire feeding power to the welding wire 2, and the main wire feeding pipe 3 is driven by the vibration driving assembly to make reciprocating motion, thereby synchronously driving the welding wire 2 to make reciprocating motion, the guide protrusions can effectively guide the welding wire 2 to remain in the central position of the main wire feeding pipe 3, and inhibit irregular swinging or deviation of the welding wire 2 in the radial direction. Such stable guiding, combined with the uniform distribution feature, ensures that the welding wire 2 can obtain continuous and balanced support throughout the vibration wire feeding process, greatly reducing the frictional resistance between the welding wire 2 and the pipe wall. Therefore, even under high-speed or high-frequency vibration wire feeding conditions, the welding wire 2 can maintain a stable and smooth motion state, avoiding problems such as wire feeding jamming, increased wear, or uneven wire feeding caused by excessive friction, thereby ensuring the stability and reliability of vibration wire feeding.

[0044] Through the above technical scheme, the guide protrusions are provided on the inner wall of the main wire feeding pipe 3 and are uniformly distributed along the length direction of the pipe, effectively reducing the contact area between the welding wire 2 and the inner wall of the main wire feeding pipe 3, and significantly reducing the frictional resistance during wire feeding. This not only improves the stability of the welding wire 2 during vibration wire feeding and reduces the wear of the welding wire 2, but also avoids wire feeding jamming or unevenness caused by excessive friction, thereby ensuring the smoothness of the welding process and the stability of the welding quality, and prolonging the service life of the main wire feeding pipe 3.

[0045] In addition, the application further proposes that the transition wire feeding tube 5 is provided with a low-friction inner lining in the passage, and the transition wire feeding tube 5 is coaxially arranged with the main wire feeding tube 3. The low-friction inner lining refers to a coating or lining of a material with a low friction coefficient arranged on the inner passage surface of the transition wire feeding tube 5. Its role is to significantly reduce the frictional resistance that the welding wire 2 receives when passing through the transition wire feeding tube 5, to ensure that the welding wire 2 can pass smoothly through this area, especially when the main wire feeding tube 3 drives the welding wire 2 to perform high-frequency reciprocating vibration, to effectively reduce the energy loss and surface wear of the welding wire 2 caused by friction. The inner lining can be implemented in various materials, for example, polytetrafluoroethylene material can be selected, which has excellent self-lubricating property and extremely low friction coefficient; or a ceramic material can be used, a dense ceramic coating is sintered or sprayed on the inner wall of the transition wire feeding tube 5 to provide a surface with high hardness, wear resistance and low friction coefficient. The transition wire feeding tube 5 is coaxially arranged with the main wire feeding tube 3, that is, the center axes of the two are consistent or highly coincident in space. This arrangement ensures that the movement path of the welding wire 2 does not suddenly deflect or bend when it enters the transition wire feeding tube 5 from the main wire feeding tube 3, thereby avoiding additional friction, resistance or bending of the welding wire 2 caused by inconsistent axes.

[0046] The scheme of the application optimizes the transition link of the welding wire 2 in the wire feeding path by arranging a low-friction inner lining in the passage of the transition wire feeding tube 5 and ensuring that the transition wire feeding tube 5 is coaxially arranged with the main wire feeding tube 3. When the wire feeding mechanism 1 drives the welding wire 2 to move forward and the vibration driving assembly drives the main wire feeding tube 3 and the welding wire 2 inside to reciprocate, the welding wire 2 remains stable under the guidance of the guide protrusion on the inner wall of the main wire feeding tube 3. Then, the welding wire 2 enters the transition wire feeding tube 5. Since the transition wire feeding tube 5 is coaxial with the main wire feeding tube 3, the movement direction and path of the welding wire 2 are smoothly continued, avoiding the increase of impact or friction caused by axis deviation. At the same time, the low-friction inner lining inside the transition wire feeding tube 5 further significantly reduces the sliding friction between the welding wire 2 and the tube wall, ensuring that the welding wire 2 can pass smoothly even at high speed, reducing energy loss and surface wear of the welding wire 2. This combination of structures effectively solves the problems of jamming, excessive friction or unstable movement that the welding wire 2 may encounter when entering the non-vibration area from the vibration area during vibration wire feeding, thereby ensuring the continuity, stability of vibration wire feeding and the integrity of the welding wire 2.

[0047] In the process of driving the welding wire 2 to vibrate by the wire feeding pipe 3, when the welding wire 2 enters the transition wire feeding pipe 5, the movement path of the welding wire 2 is smoothly transitioned due to the coaxial arrangement of the transition wire feeding pipe 5 and the main wire feeding pipe 3, avoiding impact and resistance caused by misalignment. At the same time, the low-friction lining layer in the transition wire feeding pipe 5 significantly reduces the friction between the welding wire 2 and the pipe wall, effectively reducing the wear and energy loss of the welding wire 2 during high-speed reciprocating motion. This enables the welding wire 2 to pass through the transition area more smoothly and stably, improving the reliability and efficiency of the wire feeding, prolonging the service life of the welding wire 2 and the wire feeding pipe, and ensuring the stability of the welding process.

[0048] To this end, the application further provides that the vibration source 7 is provided with a frequency adjustment module and an amplitude adjustment mechanism. The frequency adjustment range of the frequency adjustment module is 50Hz-500Hz, and the amplitude adjustment mechanism adjusts the amplitude to 0.5mm-5mm by adjusting the eccentric distance of the eccentric block.

[0049] The frequency adjustment module is used to adjust the output frequency of the vibration source 7, thereby changing the frequency of the reciprocating motion of the welding wire 2. Its implementation can be through an electronic circuit integrated inside the vibration source 7, for example, by changing the frequency converter of the alternating current frequency driving the vibration source 7, or by generating different frequency pulse signals through a digital controller to drive the vibration source 7. The amplitude adjustment mechanism is used to adjust the vibration amplitude generated by the vibration source 7, thereby changing the distance of the reciprocating motion of the welding wire 2. Its implementation can be through a mechanical way, for example, by adjusting the eccentric distance of the eccentric wheel to change the size of the centrifugal force generated during its rotation, or by adjusting the current intensity of the coil in the electromagnetic vibrator to change the size of the electromagnetic force. The frequency adjustment range of the frequency adjustment module is 50Hz-500Hz, which means that the module can provide a wide range of frequency selection to meet the specific requirements of different welding materials, welding thicknesses, and welding speeds for the vibration frequency of the welding wire 2. The amplitude adjustment mechanism adjusts the amplitude to 0.5mm-5mm by adjusting the eccentric distance of the eccentric block, where the eccentric distance of the eccentric block refers to the distance between the center of mass of the eccentric block and the rotation axis. By changing this distance, the size of the inertial force generated by the rotation of the eccentric block can be adjusted, thereby changing the output amplitude of the vibration source 7. The adjustable amplitude range of 0.5mm-5mm allows the reciprocating motion distance of the welding wire 2 to be finely adjusted according to actual welding requirements to optimize the molten pool stirring effect and weld formation.

[0050] The wire feeding device of the present application provides wire feeding power to the welding wire 2 through the wire feeding mechanism 1, at the same time, the vibration driving assembly drives the main wire feeding pipe 3 to do reciprocating motion, and then drives the welding wire 2 passing through it to do synchronous reciprocating motion, realizing vibration wire feeding. The guide protrusion arranged on the inner wall of the main wire feeding pipe 3 ensures the stability and smoothness of the welding wire 2 during reciprocating motion. On this basis, the variable frequency adjustment module and the amplitude adjustment mechanism configured by the vibration source 7 make the vibration characteristics of the welding wire 2 no longer fixed, but can be dynamically adjusted according to the actual welding requirements. Specifically, the variable frequency adjustment module can change the output frequency of the vibration source 7, so as to control the speed of reciprocating motion of the welding wire 2; the amplitude adjustment mechanism changes the output amplitude of the vibration source 7 by adjusting the eccentric distance of the eccentric block, and then controls the distance of reciprocating motion of the welding wire 2. This adjustability makes the wire feeding device adapt to the specific requirements of different welding processes, materials and parameters on the vibration frequency and amplitude of the welding wire 2. For example, when fine control of molten pool stirring or weld forming is required, lower frequency and smaller amplitude can be adjusted; when it is required to improve the deposition efficiency or handle larger molten pool, higher frequency and larger amplitude can be adjusted. In this way, the parameters of the vibration wire feeding can be best matched with the welding process, so as to optimize the welding effect.

[0051] Through the above technical solution, the wire feeding device of the present application can flexibly adjust the vibration frequency and amplitude of the welding wire 2 according to different welding processes, material characteristics and welding parameters. This adjustability greatly enhances the adaptability of the wire feeding device, so that the vibration wire feeding process can be best matched with the specific welding requirements. For example, appropriate vibration parameters can be accurately selected according to the fluidity of the molten pool, the forming requirements of the weld, and the control requirements of the spatter, so as to effectively stabilize the arc, optimize the molten pool stirring, improve the weld forming quality, and significantly reduce the welding spatter. This avoids the problem that the welding effect is poor or cannot meet the requirements of specific processes due to fixed vibration parameters, improves the flexibility of the welding process and the stability of the welding quality.

[0052] Reference Figures 1-2The application further proposes that the above-mentioned vibration driving assembly further comprises a flywheel 10, and the reciprocating movement distance of the welding wire 2 is adjusted by changing the diameter of the flywheel 10, and the adjustment range is 1mm-10mm. The flywheel 10 is introduced into the vibration driving assembly, and the function of the flywheel 10 is to affect the movement characteristics of the vibration driving assembly through the change of its structural parameters, especially the diameter, so as to adjust the reciprocating movement distance of the welding wire 2. By adding the flywheel 10 in the vibration driving assembly and making the diameter adjustable, the precise control of the reciprocating movement distance of the welding wire 2 is realized. Specifically, while the wire feeding mechanism 1 provides the wire feeding power to the welding wire 2, the vibration source 7 in the vibration driving assembly drives the flywheel 10 to rotate. The rotary motion of the flywheel 10 is transmitted to the wire tube connector 8 through the vibration connecting rod 11, and then drives the main wire tube 3 fixedly connected with the wire tube connector 8 to reciprocate, and finally synchronously drives the welding wire 2 inside the main wire tube 3 to reciprocate. By changing the diameter of the flywheel 10, the moment of inertia or the effective radius of the eccentric mass can be changed, so that the driving force or displacement characteristics transmitted to the vibration connecting rod 11 are changed. For example, increasing the diameter of the flywheel 10 results in greater inertial force or longer effective stroke at the same speed, so that the vibration connecting rod 11 drives the main wire tube 3 and the welding wire 2 to produce greater reciprocating movement distance; on the contrary, reducing the diameter reduces the reciprocating movement distance.

[0053] Through the above technical solution, the flywheel 10 is introduced into the vibration driving assembly of the new wire feeding device, and the diameter is adjustable, and the application can realize the precise adjustment of the reciprocating movement distance of the welding wire 2. This adjustment capability enables the device to adapt to the diversified requirements of different welding processes for the vibration amplitude, for example, for thin plate welding or fine welding, the reciprocating movement distance can be adjusted to be smaller to avoid excessive disturbance of the molten pool; and for thick plate welding or occasions requiring stronger molten pool stirring effect, the reciprocating movement distance can be adjusted to be larger to promote the uniformity of the molten pool and improve the penetration. In this way, the application effectively solves the limitations of the existing vibration wire feeding device in the adjustment of the vibration amplitude, significantly improves the versatility and welding quality of the device, makes the welding process more flexible and controllable, and optimizes the welding effect.

[0054] As a preferred embodiment of the application, a wire drawing device 13 is further arranged near the welding position, the wire drawing device 13 is a small wire feeding mechanism, the vibration driving assembly, the main wire tube 3 and the transition wire tube 5 are integrated on the wire drawing device 13, and the wire feeding speed of the wire drawing device 13 and the vibration frequency of the main wire tube 3 are adaptively matched.

[0055] The wire puller 13 arranged near the welding position is used to apply additional traction to the welding wire 2 near the welding area to overcome the resistance that may occur during long-distance wire feeding, ensuring that the welding wire 2 can be stably and accurately fed to the welding point. The proximity of the setting position helps to reduce the uncertainty of the wire feeding path and improve the response speed and control accuracy of the wire feeding. The wire puller 13 can be a separate module fixed near the welding torch or welding workpiece by a bracket or clamp, or it can be integrated into the welding torch body. The wire puller 13 is a small wire feeding mechanism, which generally refers to a compact, lightweight, and relatively small driving power wire feeding unit. Its structure is designed in the same way as the above-mentioned wire feeding mechanism, and its design goal is to provide sufficient wire feeding power and accurate control ability in a limited space.

[0056] The scheme of the present application adds a wire puller 13 near the welding position and designs it as a small wire feeding mechanism, thereby tightly integrating the vibration driving assembly, the main wire feeding pipe 3, and the transition wire feeding pipe 5 on the wire puller 13. This structural layout enables the reciprocating motion generated by the vibration source 7 to be more directly and effectively transmitted to the welding wire 2, greatly shortening the transmission path of the vibration energy and reducing the energy attenuation and poor vibration effect caused by long-distance transmission. As a local wire feeding power source near the welding point, the wire puller 13 can apply precise traction to the welding wire 2, effectively overcoming the frictional resistance that the welding wire 2 may encounter in the long wire feeding path, ensuring that the welding wire 2 can be fed out at a stable speed while vibrating. In addition, by achieving adaptive matching between the wire feeding speed of the wire puller 13 and the vibration frequency of the main wire feeding pipe 3, the system can dynamically adjust their cooperative relationship according to actual welding requirements or working condition changes. For example, when the welding speed or the amount of welding wire 2 needs to be adjusted, the control system can simultaneously adjust the wire feeding speed and the vibration frequency of the wire puller 13, ensuring that the welding wire 2 always maintains the best motion state during the vibration wire feeding process, avoiding problems such as unstable wire feeding, welding wire 2 shaking, or jamming caused by mismatching. This tightly integrated and intelligent matching mechanism enables the welding wire 2 to maintain high-precision vibration and stable wire feeding near the welding point, significantly improving the stability of the welding process and the welding quality. To achieve adaptive matching of the wire feeding speed and the vibration frequency, the servo motor controller of the wire puller 13 can communicate with the frequency converter controller of the vibration source 7. For example, by receiving the welding parameters (such as the target wire feeding speed) from the welding power source through a main controller, the main controller sends the target speed to the servo motor controller of the wire puller 13, and according to a pre-set matching curve or algorithm, calculates the corresponding optimal vibration frequency and sends it to the frequency converter controller of the vibration source 7. During the welding process, if the welding current or voltage fluctuates, the main controller can adjust the wire feeding speed and the vibration frequency of the wire puller 13 in real time to maintain stable droplet transfer and welding effect.

[0057] By setting the wire drawing device 13 near the welding position and designing it as a small wire feeding mechanism, while integrating the vibration driving assembly, the main wire feeding pipe 3 and the transition wire feeding pipe 5 on the wire drawing device 13, the application effectively solves the problems of unstable wire feeding and vibration effect attenuation of the welding wire 2 in the long-distance wire feeding process. This local wire feeding and vibration integration near the welding point significantly improves the wire feeding accuracy and vibration efficiency of the welding wire 2 in the welding area, ensuring that the welding wire 2 can enter the molten pool in a more stable and controlled state. In addition, through the adaptive matching of the wire feeding speed of the wire drawing device 13 and the vibration frequency of the main wire feeding pipe 3, the system can dynamically adjust the wire feeding parameters according to the actual welding working conditions, further optimizing the motion trajectory of the welding wire 2 and the droplet transfer process, thereby greatly improving the stability of the welding process and the final welding quality, and reducing the occurrence of welding defects.

[0058] The application further proposes specific limitations and optimizations of the vibration source 7. The vibration source 7 can be a straight vibrator, a reciprocating mechanism or a linear motor. The straight vibrator is a device that can produce linear reciprocating motion, usually realized by electromagnetic force or mechanical eccentricity, which provides driving force for the vibration connecting rod 11 to produce the expected vibration. The reciprocating mechanism is a mechanical mechanism that converts rotary motion into linear reciprocating motion, which provides stable and controllable reciprocating motion to drive the vibration connecting rod 11. For example, the reciprocating mechanism can be a crank slider mechanism, which drives the slider to reciprocate on the guide rail through the rotation of the crank; or a cam mechanism, which drives the follower to reciprocate through the rotation of the cam.

[0059] When the vibration source 7 is a straight vibrator, its output end is rigidly connected with the vibration connecting rod 11. This rigid connection ensures that the motion generated by the vibration source 7 can be efficiently and losslessly transmitted to the vibration connecting rod 11, avoiding energy loss and motion distortion. The implementation of rigid connection can include bolt connection, welding connection or key connection, etc., to ensure that there is no relative motion between the connecting parts. In addition, a dustproof sealing sleeve is provided at the connection, which protects the connection part from the invasion of external impurities such as dust and welding slag, prevents wear and failure, prolongs the service life of the equipment, especially in such harsh environment as welding. The dustproof sealing sleeve can adopt the form of bellows type sealing sleeve, rubber sleeve or telescopic protective cover, etc., to adapt to the reciprocating motion of the connection and provide effective sealing.

[0060] When the vibration source 7 is a reciprocating mechanism, its transmission accuracy is limited to ≤0.05 mm. Transmission accuracy refers to the maximum deviation between the actual output position and the theoretical output position of the mechanism during movement. Controlling the transmission accuracy within 0.05 mm aims to ensure that the reciprocating mechanism output has minimal movement trajectory and displacement error, thereby ensuring the accuracy and stability of the welding wire 2 vibration wire feeding, and avoiding welding defects caused by transmission errors. This high accuracy is usually achieved through high-precision machining, assembly, and the selection of high-quality components.

[0061] The scheme of the present application ensures the accuracy, stability, and reliability of the welding wire 2 vibration wire feeding process by specifically and optimizing the vibration source 7 in the vibration driving assembly. Specifically, when the wire feeding mechanism 1 provides power to the welding wire 2, the welding wire 2 is inserted inside the main wire feeding pipe 3. At this time, the vibration source 7 in the vibration driving assembly produces precise reciprocating motion according to the preset vibration parameters. If a straight vibrator is used as the vibration source 7, its output end efficiently transmits the reciprocating motion to the vibration connecting rod 11 through rigid connection, thereby driving the wire feeding pipe connector 8 and the main wire feeding pipe 3 to move synchronously. The dustproof sealing sleeve at the connection effectively blocks dust and slag in the external environment, ensuring the long-term stable operation of the transmission mechanism in harsh working conditions, and avoiding movement jamming or precision decline caused by impurities intrusion. If a reciprocating mechanism is used as the vibration source 7, whether it is a slider-crank mechanism or a cam mechanism, its high transmission accuracy (≤0.05 mm) ensures that the reciprocating trajectory of the main wire feeding pipe 3 and the welding wire 2 is highly accurate, avoiding uneven or distorted vibration caused by mechanical clearance or machining errors, thereby ensuring the accuracy of the welding wire 2 vibration wire feeding.

[0062] Through the above technical scheme, the present application effectively solves the problems of insufficient precision, poor stability, and susceptibility to external environment of the vibration source 7 in the prior art by specifically selecting and optimizing the vibration source 7. Specifically, using a straight vibrator with rigid connection and a dustproof sealing sleeve ensures efficient transmission of vibration energy and reliable operation of the equipment in harsh environments. Using a reciprocating mechanism with high transmission accuracy ensures the high accuracy of the welding wire 2 reciprocating trajectory and displacement, significantly improving the accuracy of wire feeding. Using a linear motor with short response time and closed-loop regulation function achieves rapid and accurate control of vibration parameters, greatly enhancing the adaptability of the system to different welding processes and the stability of vibration wire feeding. These optimization measures work together to make the welding wire 2 vibration wire feeding process more stable, accurate, and reliable, thereby significantly improving the welding quality, reducing welding defects, and prolonging the service life of the equipment.

[0063] The application further proposes specific limitations to the low-friction inner lining and the guiding protrusion. Among them, the low-friction inner lining can be a polytetrafluoroethylene coating or a ceramic lining, and the inner lining thickness is 0.3mm-1mm; the height of the guiding protrusion is 0.1mm-0.3mm.

[0064] The polytetrafluoroethylene coating can effectively reduce the friction coefficient between the welding wire 2 and the pipe wall due to its excellent self-lubricating property, chemical corrosion resistance and wide temperature adaptation range. As an alternative, the ceramic lining can greatly extend the service life of the inner lining due to its extremely high hardness, excellent wear resistance and high-temperature resistance, and is particularly suitable for high-strength or high-temperature welding environments, while also providing a lower friction coefficient. In addition to the above materials, an ultra-high molecular weight polyethylene coating can also be considered, which also has excellent wear resistance and low friction characteristics; or a composite coating containing molybdenum disulfide or graphite can be used to further improve the lubrication effect. The thickness of the inner lining is set in the range of 0.3mm to 1mm, which is based on the comprehensive consideration of the strength of the material, wear resistance and the effective inner diameter of the transition wire feeding pipe 5. This thickness range can ensure that the inner lining has sufficient mechanical strength and wear resistance to withstand the wear caused by the long-term reciprocating motion of the welding wire 2, and can also avoid excessive reduction of the inner diameter of the pipe due to excessive thickness, thereby affecting the smooth passage of the welding wire 2. At the same time, the height of the guiding protrusion on the inner wall of the main wire feeding pipe 3 is limited to between 0.1mm and 0.3mm, which aims to provide precise guiding support for the welding wire 2. This height range ensures that the guiding protrusion can effectively support and guide the welding wire 2, while avoiding excessive extrusion or damage to the welding wire 2. Too high protrusion may increase the movement resistance of the welding wire 2 or cause damage to its surface, while too low protrusion may not provide sufficient guiding effect, resulting in unnecessary contact between the welding wire 2 and the pipe wall.

[0065] Through the above technical solutions, when the vibration driving assembly drives the main wire feeding pipe 3 and the welding wire 2 to move synchronously and reciprocally, the polytetrafluoroethylene coating or ceramic lining on the inner wall of the transition wire feeding pipe 5 greatly reduces the friction resistance of the welding wire 2 when passing through this area due to its inherent low-friction characteristics and appropriate thickness. This allows the welding wire 2 to maintain smooth and continuous motion even under high-speed and high-frequency reciprocating vibration, avoiding jamming or shaking due to excessive friction. At the same time, the guiding protrusion on the inner wall of the main wire feeding pipe 3, with a height precisely controlled between 0.1mm and 0.3mm, provides stable and minimal contact area support and guidance for the welding wire 2. This fine guiding mechanism, combined with the low-friction inner lining, ensures that the welding wire 2 is always in a low-friction and low-wear state throughout the wire feeding path. This design not only effectively solves the problems of excessive friction, severe wear and unstable wire feeding that the welding wire 2 may encounter during vibration wire feeding, but also significantly improves the precision and reliability of wire feeding, prolonging the service life of the wire feeding device and the welding wire 2.

[0066] By the above technical solutions, the present application effectively solves the problem of serious friction and wear of the welding wire 2 and poor wire feeding stability caused by improper size and material of the guide protrusion and the low-friction inner lining in the prior art. Specifically, a polytetrafluoroethylene coating or a ceramic lining is used as the low-friction inner lining, and its thickness is accurately controlled, which significantly reduces the movement resistance of the welding wire 2 in the transition wire feeding pipe 5, ensuring the smoothness of wire feeding. At the same time, by optimizing the height of the guide protrusion, the contact area between the welding wire 2 and the inner wall of the main wire feeding pipe 3 is maximally reduced, further reducing friction and wear. This not only improves the wire feeding precision and stability of the welding wire 2 and reduces the risk of surface damage of the welding wire 2, but also prolongs the service life of the main wire feeding pipe 3 and the transition wire feeding pipe 5, reduces the maintenance cost, and thus improves the reliability and welding quality of the entire wire feeding device.

[0067] Further, the present application proposes that the buffer is an elastic washer or a rubber bushing, and the end of the main wire feeding pipe 3 is provided with a wire feeding pipe end head 4, and the inner wall of the wire feeding pipe end head 4 is provided with a chamfer structure with an angle of 15°-30°.

[0068] The buffer can be specifically an elastic washer, such as a wave washer or a disc washer made of spring steel, rubber, or polyurethane, which absorbs energy through deformation. Alternatively, the buffer can be a rubber bushing made of rubber or similar elastic polymer, which is usually in the form of a sleeve and provides buffering and damping through elastic deformation, such as using materials with different hardness and wear resistance such as natural rubber, nitrile rubber, or silicone rubber. The end of the main wire feeding pipe 3 is provided with a wire feeding pipe end head 4, which is a component installed at the end of the main wire feeding pipe 3 for guiding the welding wire 2 to smoothly transition to the next wire feeding path. The end head can be a separate, detachable component fixed to the end of the main wire feeding pipe 3 by threading, buckling, or press fitting; or it can be an integral part of the end of the main wire feeding pipe 3 formed by a specific processing technique. The inner wall of the wire feeding pipe end head 4 is provided with a chamfer structure, which is a bevel or arc surface formed by modifying the sharp or right angle at the edge of the inner wall of the wire feeding pipe end head 4. The chamfer angle is 15°-30°, which aims to balance the guiding effect and protection of the welding wire 2. The chamfer structure can be formed on the inner wall of the metal or hard plastic end head by machining, such as turning, milling, or grinding; or it can be directly formed during the injection molding or die casting process by mold forming.

[0069] The scheme of the present application solves the problems of wear and instability of the welding wire 2 in the process of vibration wire feeding by optimizing the key connection parts of the wire feeder. Specifically, the buffer arranged inside the wire tube connector 8, which is in the form of an elastic washer or a rubber bushing, can effectively absorb the impact and high-frequency vibration transmitted by the vibration driving assembly to the main wire tube 3. This buffering effect avoids the stress concentration and direct impact on the welding wire 2 caused by rigid connection, thereby protecting the welding wire 2 and the wire tube structure. At the same time, a wire tube end head 4 is additionally arranged at the outlet end of the main wire tube 3, and the inner wall of the wire tube end head 4 is specially designed with a chamfer structure. The chamfer structure eliminates sharp corners and provides a smooth and low-friction transition channel for the welding wire 2. When the welding wire 2 reciprocates under the driving of the vibration driving assembly, even at high-speed vibration, the welding wire 2 can smoothly pass through the wire tube end head 4, reducing the scraping and wear of the pipe wall. The combination of the damping effect of the buffer and the smooth guiding effect of the chamfer structure ensures the stability and smoothness of the welding wire 2 when it leaves the main wire tube 3, significantly reduces the wear of the welding wire 2, and improves the overall stability of the wire feeding.

[0070] Through the above technical scheme, in the new wire feeder, the elastic washer or rubber bushing is arranged inside the wire tube connector 8 as a buffer, which can effectively absorb the impact and high-frequency vibration generated by the vibration driving assembly, reducing the direct impact of vibration on the welding wire 2 and the wire tube structure. At the same time, the wire tube end head 4 with a chamfer structure is arranged at the end of the main wire tube 3, providing a smooth and low-friction outlet channel for the welding wire 2. This significantly reduces the friction and scraping of the welding wire 2 with the pipe wall during vibration wire feeding, effectively avoiding the wear and jamming of the welding wire 2, thereby ensuring the stability and consistency of the welding wire 2 feeding, prolonging the service life of the welding wire 2, and improving the stability of the welding process.

[0071] The places not mentioned in the present application can be realized by adopting or referring to the existing technology.

[0072] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the differences from other embodiments.

[0073] The above is only an embodiment of the present application and is not intended to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A novel wire feeding device, characterized in that, The device includes a wire feeding mechanism (1), a welding wire (2), a segmented main wire feeding tube (3) and a transition wire feeding tube (5), a wire guide nozzle (6), and a vibration drive assembly. The vibration drive assembly includes a vibration source (7), a vibration connecting rod (11), and a wire feeding tube connector (8). The vibration source (7) is connected to the wire feeding tube connector (8) via the vibration connecting rod (11), and the wire feeding tube connector (8) is fixedly connected to the main wire feeding tube (3). The wire feeding mechanism (1) provides wire feeding power to the welding wire (2). The welding wire (2) passes through the main wire feeding tube (3) and has no relative movement with the main wire feeding tube (3). The main wire feeding tube (3) reciprocates under the drive of the vibration drive assembly, thereby driving the welding wire (2) to reciprocate synchronously. The welding wire (2) passes through the transition wire feeding tube (5) and the wire guide nozzle (6) in sequence to achieve vibration wire feeding.

2. The novel wire feeding device according to claim 1, characterized in that, The wire feeding tube connector (8) is a rigid connection structure, and the wire feeding tube connector (8) has a built-in buffer.

3. The novel wire feeding device according to claim 1, characterized in that, The inner wall of the main wire feeding tube (3) is provided with guide protrusions, which are evenly distributed along the length of the main wire feeding tube (3).

4. The novel wire feeding device according to claim 3, characterized in that, The transition wire feeding tube (5) is provided with a low-friction inner lining layer in its channel, and the transition wire feeding tube (5) is coaxially arranged with the main wire feeding tube (3).

5. A novel wire feeding device according to claim 3, characterized in that, The vibration source (7) is equipped with a frequency conversion adjustment module and an amplitude adjustment mechanism. The frequency adjustment range of the frequency conversion adjustment module is 50Hz-500Hz, and the amplitude adjustment mechanism achieves adjustable amplitude of 0.5mm-5mm by adjusting the eccentricity of the eccentric block.

6. The novel wire feeding device according to claim 1, characterized in that, The vibration drive assembly also includes a flywheel (10). By changing the diameter of the flywheel (10), the reciprocating distance of the welding wire (2) can be adjusted, with an adjustment range of 1mm-10mm.

7. A novel wire feeding device according to claim 2, characterized in that, It also includes a wire drawer (13) located near the welding position. The vibration drive assembly, the main wire feed tube (3) and the transition wire feed tube (5) are integrated on the wire drawer (13), and the wire feeding speed of the wire drawer (13) is adaptively matched with the vibration frequency of the main wire feed tube (3).

8. A novel wire feeding device according to claim 1, characterized in that, The vibration source (7) is a linear vibrator, a reciprocating mechanism, or a linear motor; when the vibration source (7) is a linear vibrator, its output end is rigidly connected to the vibration connecting rod (11); when the vibration source (7) is a reciprocating mechanism, it is a crank-slider mechanism or a cam mechanism and the transmission accuracy is ≤0.05mm; when the vibration source (7) is a linear motor, its response time is ≤10ms and the vibration parameters are closed-loop adjusted through a servo controller.

9. A novel wire feeding device according to claim 4, characterized in that, The low-friction liner is a polytetrafluoroethylene coating or a ceramic liner, with a liner thickness of 0.3mm-1mm; the guide protrusion has a height of 0.1mm-0.3mm.

10. A novel wire feeding device according to claim 2, characterized in that, The buffer is an elastic washer or a rubber bushing. The end of the main wire feeding tube (3) is provided with a wire feeding tube end (4). The inner wall of the wire feeding tube end (4) is provided with a chamfer structure with a chamfer angle of 15°-30°.

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